import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/login")
public class LoginServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String username=req.getParameter("username");
        String password=req.getParameter("password");
        if("zhangsan".equals(username)&&"123".equals(password)){
            HttpSession httpSession=req.getSession(true);
            httpSession.setAttribute("username",username);
            httpSession.setAttribute("count",0);
            resp.sendRedirect("index");
        }else{
            resp.getWriter().write("login failed!");
        }
    }
}
